Pencil



March 27, 1928.

E. w. wlLsoN PENCIL a? ,W Q.,

fr @nu ,m

" length by merely pressing the point of the the point downwardly,

turning the saine Patented Mar. 27, y 1928.

,UNITED STATES EDWIN w.V WILSON, oF

CHICAGO, ILLINOIS., AsSIeNoR oF ONE-12mm` To FRANK T. BoYDsfroN, orCHICAGO, ILLINOIS.

PENCIL.

Application filed April 21, 1926. Serial No. 103,466.

In the present construction of mechanical pencils, that is, the typehaving a magazine to carry extra leads, to be replaced when exhausted,the leadsy are fed to the proper length for writing from their holder bymeans of a ,screw which is turned` manually. Itis often necessary tohave several pencils of this and other types at hand as in the case ofa` court reporter `taking notes, as

there is not sufficient time allowed to turn the Screw to feed the lead,when it is used to the holder. y

My invention is in the construction, of a lead. pencil, that is simple,strong, durable,

havingfew working parts, positive'in operation and will feed the leadVto the required pencil downwardly, this operation may be done whilewritingand with no. waste of time, the time required topress the pointof the pencil being onlyv a fraction of the time required to changepencils.v

An object of my invent'on is, the construction of a lead pencil thatwill feed the lead to the required length by pressing havingkpractically all the working parts for feedingthe lead concealed. pAnother object of the invention is, to construct a pencil'that will feedthe leadto the required length by pressingthe point downwardly, having ayielding cushion for the lead to prevent breakage of the sanie,shouldthe operator press too hard while'writing. Still another object of theinvention is, to construct a pencil that is simple inV construction,self. feeding and provided with a receptacle for holding extra leads andprovided with feed and retaining pawls, that will feed and retain thelead to the position 'it is fed untill the lead is used.y

A Still further object of the invention is, to construct a. pencil thatcan be loaded or filled by inserting the lead through the point, thefeed and retaining pawls being thrown out of engagement by turning thelower portion of the pencil a quarter turn in one direction, the lead isthen inserted and in the opposite direction to its original andoperative position the encil is then readyl to be used.

Further objects an-dradvantages of the invention will be disclosed inthe following specification, reference being had to the accompanyingdrawing, constituting a part of -this specification in which similarcharacters 'of reference denote corresponding parts in lall the views,and which-f- Figure 1 is a vertical longitudinal sectional view. Y

Fig. 2 Ais a vertical longitudinal view taken on line 2-2 of Fig'. 1.

3 isa sectional view taken on` line 3 3 of Fig. 1. l

Fig. 4 is a Sectional view taken online 4--4 of Fig. 1. i Y Fig. 5 is asectional view taken on line 5*-5 ofl Fig. 1. Y v

Fig. 6 is a view partly in `section and partly in elevation of the lowerportion of the pencil showing the stops and stop lug. In'c'arrying outtheembodiment of my 1nvent1on,10lindicates the body of the pencil whichmay be 'inadeof vbakelite or any other`suitable material, having acylindrical opening 11v exten-dingupwardly to a parti- Ition'w'all12`located'- about three-quarters of the length of the body. The lowerportion of-the body is reducedas lat 13 and isprovidedl with a cut-awayportionforming the' particularly to the lower portion of the pen-A cil,the reduced portion 13 has the cylindrical sleeve 19 extendingdownwardly to a pointbelow the body portion 10 of the pencil asindicated at V2O which terminates in a truncated cone 21 and'is providedat its lower extremity with a cylindrical opening 22 which extends to apoint as indicatedat 2.3,and is provided with a square opening 24;terminating at a point as indicated at25. The sleeve 26 extends throughthe cylindrical opening 22 to a point beyond the extremity of the lvided with a Square portion 27 that -its loosely within .the squareopening 24 and which is provided atits upper end with an enlargedportion 28 and a lead vcarrier 29 extending upwardly of vtheenlargedcylindricalportion 28 and which telescopes within' the tubular member30. The tubular truncatedcone 21 and vis pro-k loo member 30 is providedwith a plurality of ratchet teeth on opposite sidesy as indicated at 31and 32 extending to a point as indicated at 33-33. The upper portion Vofthe tubular member- 30 "forms Aa "housing for the compression spring 34the'upper end of which rests against a perforated washer 35` l"50' and51. The sleeve 19 may be rotated for and its lower end rests against ahead 37'of the downwardly extendingplnnger It will be seen in Figs. land2 that the compressionspring 34 is interposed ,between the washer 35 andthe head 37 ofthevplunger 36 and normally tendsto force said plungerdownwardly, and is limited in'its movement by the head 38.

The tubular member30 is guided in the feed pawl member 39 the upperendof which is provided with lan annular .inwardly extending bead 40.

Formed `in the side wall of the tubular member 39 is a feed pawl 41which extends inwardly and engages the ratchet teeth 31 formed in thetube 30. Directly opposite to the feedpawl 41 the feed pawl member 39 isprovided with a `slot V42V extending vdownw'ardly asubstantial distanceto permit the retaining Vpawl 43 to extend therethrough, Vand engage theratchet teeth 320i' the 'tubular member 30. The pawli43 is formed in theside wall of ,the retaining pawl member `44 whichy surrounds the 'feedpawl 4member 39 throughout :its length and eXtendsupwardly tothepartition 12 iformed in the body .portion 10. The upper portion of theretaining pawl member 44 -is provided with' a cap 45 which is pinnedthereto, and contains a compression spring 446V resting against, the cap45 ,and ybearing uponthetop edge ofthe iieedpa-wl @member 39 affording atension-on the :feed pawl `member which ca-usesit Vto bear againstthetop edge of the Venlarged cylin drical portion 28. e

The retaining -pawl member44 surrounds the feed pawl member 39 and isprovided at itslower extremity with an outwardly extending lange 47vwhich engages below a ring member 43 fixed tothe inner side of thesleeve 19. The .ring 48v is provided -on its top side with an upwardlyextending lug 49 which engages 'the outwardly turned years 50 and 51 of`the Iretaining pawl member 44.

Referring more lparticularly to F igs, 2 and 3 it will befseen, that thelead carrier 29 is provided at. its extreme upper end with'anoutwardlyextended lug v,29a which extends'througha slotted opening 30iL 'inthetubular member 30.

Y In this-construction, vthelead carrierv29 is guided'at its 'lower end:into the truncated cene 21 and'at `the yupper yend telescopesinto thetubular,vv member. 30, said` tube being guided intolthe feed pawl member39to insure lperfect alignment. The lplunger 36 lextends partially intofthe lead carrier 29 and isfheldinconstant engagement with said carlowerportion 13 of the body 10 is out away V-orvabou't 90-degrees, asindicated at A52orm- A-ling thestops v14 and 15 and provides the stop orrest for each of the outwardly turned lugs about degrees, and, limitedin its movement by the upwardly extending lug 49 con- Vtacting with thelugs 50 and land the lead carrier 29 provided at its lower 1end with thesquared portion 27 as above described,will

be rotated therewith, and the extended lug 29a engaging theyslot 30"L ofthe tubular.. member 30` will cause said tube to be rotated .about 90degrees, also. .Thev purposeof. rotating the 'shell 19 and the elements'as above described about, a quarter of a turn l,is for disengagingthefeed -pawl 41 and the retaining pawl 43. Rotating the sleeve 19,.inthe reverse direction will restore the ratchet teeth of thetubularjmember 30 in. engage ment with the pawls.

The lower end of the sleeve 26 is provided with a yielding tensionagainstthe side wall of the inserted lead 53 asis well known in theconstructionot mechanical pencils.

To insert new leads in the-pencil',` the shell portion as indicatedat'19is rotated about 90 I degrees, the stop 49 will thenengage lthe lug51 and limit the movement of saidf'shell in that directiomand `as abovedescribed will rotate the lead jca1rier'29 and the tube 30 yprovidedvwith ratchet teeth, disengaging thepawls41 and 43 when thelead53f maybe inserted through the' sleeve ,26:forcing the plunger 36 upwardly, andthr'ough'the spring 34 will raise the tubular memberv 30 until the lowerportion of the slotf30` contacts withthe lug 29a thus limiting(`theupward movement Vvof the` plunger 36. After this point has beenreached 'the shell 19 is ro-v tated about y90 degrees, in the oppositedirec.- tion until the lug 49 contacts with the-eX- tending ear 50restoringy the lead carrier 29 and the tubular member 3() provided withratchet teeth to operative position, as above stated, and causing theratchet-teeth 31 and 32 to be brought into engagement with'the feed pawl41 and the retaining pawl 43 thus rendering the pencil operable.

Assuming now that the lead is worn out, the operator will pressthe pointof the Vpencil downwardly against a hard surface which will torce thesleeve 26 upwardly, and the enlarged portion'28 will raise the feedpawlmember 39 until the feed pawl 41 engages the next tooth of thek ratchetteeth 31, the upper end vof the tube'will compress the tension spring 46and the lead carrier29 will telescope into the tube 30 and the plunger36 will compress the spring 34.

When the pressure is released onthepoint of the pencil, thecompressionspring" 46 will force the feed pawl member 39 downwardly withthe feed pawl 41 (which at this time has engaged the ratchet teeth 31one tooth above the position Vas shown in Fig. l) and cause one of theratchet teeth 32 on the op-- posite side to be engaged by the retainingpawl 43 thus causing the tubular member to be forced downwardly thedistance of one tooth, and with it the plunger 36 which abuts the leadas indicated at 54: thus forcing the lead 53 outwardly of thetube 26 thelength of one of the ratchet'teeth. l/Vhile writing, this operation maybe repeated until all of the lead is used. While using the pencil, thelead as indicated at 53 abuts the plunger 36 which has the compressionspring 34: as above stated, and in this construction the lead is alwaysunder a constant cushion thereby preventing the breakage of the same.

It will therefore be seen, that this invention will alleviate thepresent inaccurate and tedious method of adjusting the lead in amechanical pencil and means is provided for quickly and accuratelypositioning the same.

` Having thus fully described my invention, what I claim as newanddesire to secure by Letters Patent is y l. In a pencil of the classdescribed including a body providing a holder, a retaining pawl membersupported concentrically thereof and provided with a retaining pawl, afeed pawl member slidably mounted in said retaining pawl member andprovided with a slot through which the retaining pawl extends, a tubularmember having ratchet teeth on opposite sides provided with alongitudinal slot intermediate its length, a lead carrier slidablymounted co-axially of said tubular member, a lug on said carrierextending through said slot and co-acting therewith for telescopingmovement, and a feed p pawl carried by the feed pawl member with'- insaid retaining pawl member, and co-acting with said ratchet teeth on onevside of the ratcheted member.

2. In a pencil of the cla-ss described including a. body providing aholder, a retainving pawl member supported concentrically' thereof andprovided with a retaining pawl, a feed pawl member slidably mounted inthe retaining pawl member and provided with a longitudinal slot throughwhich the retaining paw extends, a tubular member having ratchet teethon opposite sides provided with a longitudinal slot intermediate itslength, a lead carrier slidably mounted coaxially of said tubular memberprovided with an enlarged cylindrical pgrtion, a square portion adjacentthereto` said cylindrical portion abutting the said feed pawl memberslidably mounted within said retaining pawll member, and a cylindricalsleeve provided with axsquare opening to engage said square portion ofsaid lead carrier.

3. In a pencil of the class described including a body providing aholder, a retaining pawl member supported concentrically thereof, andprovided with a retaining pawl,v

a feed pawl member slidably mounted in said retaining pawl memberandprovided with a slot through which the retaining pawl extends, a tubularmember having ratchet teeth *on` opposite sides provided with alongitudinal slot intermediate its length, a spring tension provided atone end of said feed pawl member, a lead carrier mounted co-axially ofsaid tubular member, an enlarged portion on said lead carrier abuttingthe free endof said slidably mounted feed pawl member.

4. Ina pencil of the class described including a body providing a'holder, a retaining pawl member supported concentrically thereof andprovided with a retaining pawl, a feed pawl member slidably mounted inthe retaining pawl member and provided with a slot through which theretaining pawl extends, a tubular member having ratchet teeth onopposite sides provided with a longitudinal 'slot intermediate itslength, a lead carrier slidably'mounted co-axially of said tubularmembers provided with an enlarged portion, a square portion adjacentthereto, said enlarged portion contacting with the saidfeedpawl member,the leadcarrier extending. outwardly of said holder and yieldinglymounted therein.

5. In a pencil of the class described including a body providing'aholder, a retaining pawl member supported concentrically thereof-andprovided with a retaining pawl, a feed pawl member slidably mounted inthe said retaining pawl member and provided with a slot through whichthe retaining awl extends, a tubular member having ratchet teeth onopposite sides provided with aklongitudinal slot intermediate itslength, a lead carrier slidably mounted co-axially of said tubularmember provided with an enlarged portion, a square portion adjacentthereto, said enlarged portion vcontacting with the said' feed pawlmember, the lead carrier extending outwardly of said holder, a plungerslidably and yieldingly mounted in the lead carrier with a step by stepmeans for operating said plunger.

Y 6. In a pencil of the class described including a body providingaholder, a retaining pawl member supported therein concentricallythereofand provided with a retaining pawl, a pair of spaced apart outwardlyextending lugs, a flange on saidvretaining pawl member, a cylindricalsleevemounted on one endof said holder, an internal ring fixed to saidcylindrical sleeve co-acting with for engaging the spaced lugs;

.said flange, a lugmounted on said fixed ring

